the answers to getting a headache from a knee ingection of cortizoan, has no answers this is the 3rd time i have gotten a headache after the shot headache did go into a fullblown cluster headache (migrain), which nothing would taker away and i ended up in the emergency room vomiting due to the powerful headache, (praying It doesnt get to that stage this time, that started as a mild headache 2 days and worked its way up, i havent seen any answers from you doctors other than, it will evenyually go away.... so truly i am not going to pay you for that. your hypicratic oath should make you have a bigger heart for humanity than the almighty $$.